Thank you again for submitting your manuscript to Climate of the Past. Based on the two reviews that I received, I decide to reconsider it for final publication after major revisions.

Please respond to the points brought up by the two referees one by one.

In particular, please consider the general remarks made by the second referee (B. Metcalfe) with respect to the maturity of the software. If it may be achieved in a reasonable amount of time, follow up on some of the referee's suggestions, for example, to provide a new user with an example that uses the same dataset from start to finish.

Furthermore, please consider to move the assumptions that sedproxy makes upfront, as proposed by the first referee.

Minor comments based upon semantics: Check that the species names are in italiacs (e.g. legend/axis titles in figure 2 and 6; table 2; pg 16. L34)

Table 2 - add east west to lat lon

P 13 L 15 – “care should also be taken to restrict the occurrence of taxa to their known depth ranges.”, perhaps add calcification or '(e.g. apparent calcification depths)', as the depth habitat can be deeper than the signal recorded as isotopes or trace metals in the shell (especially if they sink deeper prior to death)

Climate proxies from marine sediments provide an important record of past temperatures, but contain noise from many sources. These include mixing by burrowing organisms, seasonal and habitat biases, measurement error, and small sample size effects. We have created a forward model that simulates the creation of proxy records and provides it as a user-friendly R package. It allows multiple sources of uncertainty to be considered together when interpreting proxy climate records.

Climate proxies from marine sediments provide an important record of past temperatures, but...